# 2550 API Admin Cd0708a4

> Admin API Reference

- Skill: `tools-only/2550-api-admin-cd0708a4` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/2550-api-admin-cd0708a4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/2550-api-admin-cd0708a4/raw
- Safety review: pending (external: skill-scanner PASS, skillspector CAUTION)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/tools-only/2550-api-admin-cd0708a4

---

# Admin API Reference

## GraphQL Admin API

Modern API for Shopify Admin operations with efficient data fetching.

**Endpoint:**
```
POST https://{store}.myshopify.com/admin/api/2026-01/graphql.json
```

**Headers:**
```javascript
{
  'X-Shopify-Access-Token': 'shpat_...',
  'Content-Type': 'application/json'
}
```

**Basic Query:**
```graphql
query GetProducts($first: Int!) {
  products(first: $first) {
    edges {
      node {
        id
        title
        handle
        status
        vendor
        productType

        # Pricing
        priceRange {
          minVariantPrice { amount currencyCode }
          maxVariantPrice { amount currencyCode }
        }

        # Images
        images(first: 5) {
          edges {
            node {
              id
              url
              altText
            }
          }
        }

        # Variants
        variants(first: 10) {
          edges {
            node {
              id
              title
              sku
              price
              inventoryQuantity
              available: availableForSale
            }
          }
        }
      }
    }

    pageInfo {
      hasNextPage
      hasPreviousPage
      startCursor
      endCursor
    }
  }
}
```

**Variables:**
```json
{
  "first": 10
}
```

**JavaScript Example:**
```javascript
async function getProducts(accessToken, store, limit = 10) {
  const query = `
    query GetProducts($first: Int!) {
      products(first: $first) {
        edges {
          node {
            id
            title
            handle
            priceRange {
              minVariantPrice { amount currencyCode }
            }
          }
        }
        pageInfo {
          hasNextPage
          endCursor
        }
      }
    }
  `;

  const response = await fetch(
    `https://${store}.myshopify.com/admin/api/2026-01/graphql.json`,
    {
      method: 'POST',
      headers: {
        'X-Shopify-Access-Token': accessToken,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        query,
        variables: { first: limit },
      }),
    }
  );

  const { data, errors } = await response.json();

  if (errors) {
    console.error('GraphQL Errors:', errors);
    throw new Error(errors[0].message);
  }

  return data.products;
}
```

**Common Mutations:**

Create product:
```graphql
mutation CreateProduct($input: ProductInput!) {
  productCreate(input: $input) {
    product {
      id
      title
      handle
    }
    userErrors {
      field
      message
    }
  }
}
```

Update product:
```graphql
mutation UpdateProduct($input: ProductInput!) {
  productUpdate(input: $input) {
    product {
      id
      title
      status
    }
    userErrors {
      field
      message
    }
  }
}
```

Set metafield:
```graphql
mutation SetMetafield($input: MetafieldInput!) {
  metafieldSet(input: $input) {
    metafield {
      id
      namespace
      key
      value
      type
    }
    userErrors {
      field
      message
    }
  }
}
```

## REST Admin API (Legacy)

> **Note:** GraphQL is Shopify's primary API. Use GraphQL for all new development. REST endpoints remain available but receive fewer updates and may be deprecated in future API versions.

Traditional REST API for Shopify Admin operations.

**Base URL:**
```
https://{store}.myshopify.com/admin/api/2026-01/
```

**Authentication:**
```javascript
headers: {
  'X-Shopify-Access-Token': 'shpat_...'
}
```

**Common Endpoints:**

Get products:
```javascript
GET /admin/api/2026-01/products.json?limit=50&status=active

// JavaScript
const response = await fetch(
  `https://${store}.myshopify.com/admin/api/2026-01/products.json?limit=50`,
  {
    headers: {
      'X-Shopify-Access-Token': accessToken,
    },
  }
);

const { products } = await response.json();
```

Get single product:
```javascript
GET /admin/api/2026-01/products/{product_id}.json
```

Create product:
```javascript
POST /admin/api/2026-01/products.json

// Body
{
  "product": {
    "title": "New Product",
    "body_html": "<p>Description</p>",
    "vendor": "My Vendor",
    "product_type": "Shoes",
    "status": "draft"
  }
}
```

Update product:
```javascript
PUT /admin/api/2026-01/products/{product_id}.json

// Body
{
  "product": {
    "id": 123456789,
    "title": "Updated Title"
  }
}
```

Get orders:
```javascript
GET /admin/api/2026-01/orders.json?status=any&limit=50
```

Get customers:
```javascript
GET /admin/api/2026-01/customers.json?limit=50
```

## OAuth 2.0 Authentication

Complete OAuth flow for custom apps.

**Step 1: Authorization Request**
```
GET https://{shop}.myshopify.com/admin/oauth/authorize?
  client_id={api_key}&
  redirect_uri={redirect_uri}&
  scope={scopes}&
  state={random_state}
```

**Scopes:**
```javascript
const scopes = [
  'read_products',
  'write_products',
  'read_orders',
  'write_orders',
  'read_customers',
  'write_customers',
  'read_inventory',
  'write_inventory',
  'read_metafields',
  'write_metafields',
].join(',');
```

**Step 2: Handle Callback**
```javascript
// User approves, Shopify redirects to:
GET {redirect_uri}?code={auth_code}&state={state}&hmac={hmac}&shop={shop}

// Verify HMAC for security
function verifyHmac(query, secret) {
  const { hmac, ...params } = query;

  const message = Object.keys(params)
    .sort()
    .map(key => `${key}=${params[key]}`)
    .join('&');

  const hash = crypto
    .createHmac('sha256', secret)
    .update(message)
    .digest('hex');

  return hash === hmac;
}
```

**Step 3: Exchange Code for Token**
```javascript
POST https://{shop}.myshopify.com/admin/oauth/access_token

// Body
{
  "client_id": "{api_key}",
  "client_secret": "{api_secret}",
  "code": "{auth_code}"
}

// Response
{
  "access_token": "shpat_...",
  "scope": "write_products,read_orders"
}

// Node.js example
async function getAccessToken(shop, code, apiKey, apiSecret) {
  const response = await fetch(
    `https://${shop}/admin/oauth/access_token`,
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        client_id: apiKey,
        client_secret: apiSecret,
        code,
      }),
    }
  );

  const { access_token, scope } = await response.json();
  return { access_token, scope };
}
```

## Rate Limiting

GraphQL uses points-based rate limiting.

**Rate Limits:**
- 50 cost points per second maximum
- Bucket refills at 50 points/second
- Each query has a calculated cost

**Check Rate Limit:**
```javascript
const response = await fetch(graphqlEndpoint, options);

const rateLimitHeader = response.headers.get('X-Shopify-GraphQL-Admin-Api-Call-Limit');
// Example: "42/50" (42 points used, 50 max)

const [used, limit] = rateLimitHeader.split('/').map(Number);

if (used > 40) {
  // Approaching limit, slow down
  await delay(1000);
}
```

**Implement Retry Logic:**
```javascript
async function fetchWithRetry(url, options, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    const response = await fetch(url, options);

    if (response.status === 429) {
      // Rate limited
      const retryAfter = response.headers.get('Retry-After') || 2;
      await delay(retryAfter * 1000 * Math.pow(2, i)); // Exponential backoff
      continue;
    }

    return response;
  }

  throw new Error('Max retries exceeded');
}

function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}
```

## Webhooks

Event-driven notifications for app integrations.

**Common Webhooks:**
```javascript
// Product events
'products/create'
'products/update'
'products/delete'

// Order events
'orders/create'
'orders/updated'
'orders/paid'
'orders/fulfilled'
'orders/cancelled'

// Customer events
'customers/create'
'customers/update'
'customers/delete'

// Cart events
'carts/create'
'carts/update'

// Inventory events
'inventory_levels/update'

// App events
'app/uninstalled'
```

**Register Webhook (GraphQL):**
```graphql
mutation CreateWebhook($input: WebhookSubscriptionInput!) {
  webhookSubscriptionCreate(input: $input) {
    webhookSubscription {
      id
      topic
      endpoint {
        __typename
        ... on WebhookHttpEndpoint {
          callbackUrl
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}
```

**Variables:**
```json
{
  "input": {
    "topic": "ORDERS_CREATE",
    "webhookSubscription": {
      "callbackUrl": "https://your-app.com/webhooks/orders",
      "format": "JSON"
    }
  }
}
```

**Handle Webhook (Node.js/Express):**
```javascript
app.post('/webhooks/orders', async (req, res) => {
  // Verify webhook HMAC
  const hmac = req.headers['x-shopify-hmac-sha256'];
  const body = JSON.stringify(req.body);

  const hash = crypto
    .createHmac('sha256', SHOPIFY_WEBHOOK_SECRET)
    .update(body)
    .digest('base64');

  if (hash !== hmac) {
    return res.status(401).send('Invalid HMAC');
  }

  // Process order
  const order = req.body;
  console.log('New order:', order.id, order.email);

  // Respond quickly (within 5 seconds)
  res.status(200).send('OK');

  // Process in background
  await processOrder(order);
});
```

## Common Patterns

### Pagination (GraphQL)

```javascript
async function getAllProducts(accessToken, store) {
  let allProducts = [];
  let hasNextPage = true;
  let cursor = null;

  while (hasNextPage) {
    const query = `
      query GetProducts($first: Int!, $after: String) {
        products(first: $first, after: $after) {
          edges {
            node { id title }
          }
          pageInfo {
            hasNextPage
            endCursor
          }
        }
      }
    `;

    const response = await fetch(endpoint, {
      method: 'POST',
      headers: {
        'X-Shopify-Access-Token': accessToken,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        query,
        variables: { first: 50, after: cursor },
      }),
    });

    const { data } = await response.json();
    allProducts.push(...data.products.edges.map(e => e.node));

    hasNextPage = data.products.pageInfo.hasNextPage;
    cursor = data.products.pageInfo.endCursor;
  }

  return allProducts;
}
```

### Error Handling

```javascript
async function safeApiCall(query, variables) {
  try {
    const response = await fetch(endpoint, {
      method: 'POST',
      headers: {
        'X-Shopify-Access-Token': accessToken,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ query, variables }),
    });

    if (!response.ok) {
      throw new Error(`HTTP ${response.status}: ${response.statusText}`);
    }

    const { data, errors } = await response.json();

    if (errors) {
      console.error('GraphQL Errors:', errors);
      throw new Error(errors[0].message);
    }

    return data;
  } catch (error) {
    console.error('API Error:', error);
    throw error;
  }
}
```

## Best Practices

1. **Always check API version** - Use latest stable (2026-01)
2. **Implement rate limit handling** - Use exponential backoff
3. **Verify webhook HMAC** - Security critical
4. **Use GraphQL over REST** when possible - More efficient
5. **Request only needed fields** - Reduce response size
6. **Handle errors gracefully** - Check `errors` and `userErrors`
7. **Store access tokens securely** - Never expose in client code
8. **Use minimum necessary scopes** - Security best practice
9. **Implement retry logic** - Handle transient failures
10. **Respond to webhooks quickly** - Within 5 seconds